SkImageGeneratorWIC: make the header compile without src/.

SkTScopedComPtr.h is located in src/utils/win/.

Change-Id: If2f3a28d7427e9a2e196272ce07f303de4d613ca
Reviewed-on: https://skia-review.googlesource.com/155562
Commit-Queue: Hal Canary <halcanary@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
Auto-Submit: Hal Canary <halcanary@google.com>
2 files changed